function drawVisualization() {
  // Some raw data (not necessarily accurate)
  var data = google.visualization.arrayToDataTable([
    ['Month',   'Bolivia', 'Ecuador', 'Madagascar', 'Papua New Guinea', 'Rwanda'],
    ['2004/05',    165,      938,         522,             998,           450],
    ['2005/06',    135,      1120,        599,             1268,          288],
    ['2006/07',    157,      1167,        587,             807,           397],
    ['2007/08',    139,      1110,        615,             968,           215],
    ['2008/09',    136,      691,         629,             1026,          366]
  ]);

  // Create and draw the visualization.
  var ac = new google.visualization.AreaChart(document.getElementById('visualization'));
  ac.draw(data, {
    title : 'Monthly Coffee Production by Country',
    isStacked: true,
    width: 600,
    height: 400,
    vAxis: {title: "Cups"},
    hAxis: {title: "Month"}
  });
}
